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Lysozyme

溶菌酶

Company: Wako Pure Chemical Industries
Catalog#: 122-02673
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Direct Visualization of the Multicopy Chromosomes in Cyanobacterium Synechococcus elongatus PCC 7942
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Date:
2018-08-05
[Abstract]  Cyanobacteria are prokaryotic organisms that carry out oxygenic photosynthesis. The fresh water cyanobacterium Synechococcus elongatus PCC 7942 is a model organism for the study of photosynthesis and gene regulation, and for biotechnological applications. Besides several freshwater cyanobacteria, S. elongatus 7942 also contains multiple chromosomal copies per cell at all stages of its cell cycle. Here, we describe a method for the direct visualization of multicopy chromosomes in S. elongatus 7942 by fluorescence in situ hybridization (FISH). [摘要]  蓝细菌是进行含氧光合作用的原核生物。 淡水蓝藻 Synechococcus elongatus PCC 7942是用于研究光合作用和基因调控以及生物技术应用的模式生物。 除了几种淡水蓝藻, S. 细胞 7942在其细胞周期的所有阶段每个细胞还含有多个染色体拷贝。 在这里,我们描述了一种直接可视化 S中多拷贝染色体的方法。 通过荧光原位杂交(FISH)测定细菌 7942。

【背景】蓝藻是原核微生物,其利用与高等植物中的叶绿体类似的产氧光合系统。虽然 Escherichia coli 和枯草芽孢杆菌等细菌具有单个圆形染色体,但是几种淡水蓝细菌每个细胞有多个圆形染色体(Mann和Carr,1974; Labarre 等人,1989; Binder和Chisholm,1995)。淡水蓝藻 Synechococcus elongatus PCC 7942(以下简称 S.longatus 7942)每个细胞携带3-8个染色体拷贝(Griese et al。,2011; Watanabe et al。,2012; Watanabe et al。,2015)。已经建立了荧光报告子 - 操纵子系统来获取 S的多拷贝染色体的图像。 elongatus 7942(Chen et al。,2012; Jain et ...

In vitro DNA Protection Assay Using Oxidative Stress
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Date:
2015-07-20
[Abstract]  A wide range of stresses such as oxidative stress, acid, alkaline, UV, and metal can damage DNA. Here, we describe a protocol to measure the DNA nicking damage by Fenton reaction-mediated oxidative stress. Fenton reaction (Fe2+ + H2O2 → Fe3+ + OH- + ∙OH) produces the highly deleterious hydroxyl radicals that damage the cellular components such as DNA, lipid and proteins. [摘要]  诸如氧化应激,酸,碱,UV和金属的各种应力可以损害DNA。 在这里,我们描述了一个协议,以测量DNA切口损伤芬顿反应介导的氧化应激。 Fenton反应(Fe 2+ + H 2 O 2 O 2→Fe 3+ +)+ OH - +∙OH)产生损害细胞组分如DNA,脂质和蛋白质的高度有害的羟基自由基。

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